There are hardly any decision points at all. The path to each decision is so short and irresistible, more like an electric pulse than like a weighing of options, that the reader is hard-pressed to explain what happened. Suddenly, it's over, and there's no looking back. The decision to go to war "was an accretion," Richard Haass, the director of policy-planning at the State Department until the invasion of Iraq, told me. "A decision was not made—a decision happened, and you can't say when or how."